Star Fall by Nathan Seegmiller

A United States Geological Survey C-130 plane is on a routine survey mission, when it is forced to land by an unknown militant group after detecting something in the ground.

Retired DHS agent Owen Rockwell is tasked by his former boss, James Deegan, to locate a mysterious structure near the city of Rawlins, Wyoming. Rockwell and his wife Jane are in the middle of their investigation, when they are interrupted by a known cult called the Creation Keepers. As they continue their work, they are warned by a local Indian shaman who works for the cult to stay away.

Will Rockwell and Jane be able to find the secretive structure and discover its enigmas...before time runs out?